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作 者:Jing Cao Yiping Chen Yao Jiang Jingshu Chen Junhua Wu
机构地区:[1]State Key Laboratory of Loess and Quaternary Geology,Institute of Earth Environment,Chinese Academy of Sciences,Xi'an,China [2]University of Chinese Academy of Sciences,Beijing,China [3]Xi'an Institute for Innovative Earth Environment Research,Xi'an,China
出 处:《Grassland Research》2023年第1期69-83,共15页草地研究(英文)
基 金:National Natural Science Foundation of China,Grant/Award Number:42041005。
摘 要:Background:Revegetation is widely used in degraded grassland restoration.However,the responses of grassland plant and soil properties to fencing(FC)and grazing(GZ)remain poorly understood,especially the vegetation–soil coupling coordination(C_(d))mechanism.This study explored single and interactive responses of vegetation and soil properties under FC and GZ after revegetation.Methods:A field experiment with FC and GZ treatments was conducted in Loess Plateau reconstructed grassland,with degraded grassland as the control(CK).Plant and soil properties and C_(d) were analyzed using the analytic hierarchy process(AHP)and principal component analysis(PCA).Results:The order of soil comprehensive evaluation(SCE)was GZ>FC>CK,while that of vegetation comprehensive evaluation(VCE)was FC>GZ>CK.The C_(d) of CK was 0.39(mild imbalance),while the values of FC and GZ were 0.57 and 0.54,respectively(little coordination).The VCE/SCE of FC was 1.48(soil lag type),and the values of GZ and CK were 0.69 and 0.35,respectively(vegetation lag and vegetation loss type,respectively).Conclusions:Both GZ and FC improved C_(d) and facilitated recovery.However,degraded grasslands should be restored via moderate grazing for sustainable ecological and economic development.
关 键 词:degraded artificial grassland grazing and fencing REVEGETATION vegetation-soil coupling coordination
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